Table of Contents POS
HYPHEN
COUNT IN NET
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
THESAURUS
ROGET THESAURUS

WORDNET DICTIONARY

Verb lessen has 3 senses

• lessen(v = verb.change) decrease, diminish, fall - decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"
is one way to change magnitude
Sample sentence:
Something ----s

• lessen(v = verb.change) decrease, minify - make smaller; "He decreased his staff"
is one way to alter, change, modify
Sample sentences:
Somebody ----s something
Something ----s something

• lessen(v = verb.change) subside - wear off or die down; "The pain subsided"
is one way to weaken
Sample sentence:
Something ----s

CIDE DICTIONARY

OXFORD DICTIONARY

THESAURUS

lessen

abate, ablate, abrade, abridge, abstract, allay, alleviate, allow for, amputate, anesthetize, appease, assuage, attemper, bank the fire, bate, be eaten away, benumb, blunt, chasten, clip, close, color, compress, constrain, consume, consume away, control, corrode, crop, crumble, curtail, cushion, cut, cut back, cut down, damp, dampen, de-emphasize, deaden, deaden the pain, decline, decrease, deduct, deflate, deliquesce, depreciate, depress, derogate, detract, die away, diminish, disparage, dive, downgrade, downplay, drain, drop, drop off, dull, dwindle, ease, ease matters, eat away, ebb, erode, extenuate, extract, fall, fall away, fall off, file away, foment, give relief, gloss over, ignore, impair, keep within bounds, languish, lay, leach, lenify, let up, lighten, lower, lull, make allowance for, melt away, mince, minify, mitigate, moderate, modulate, mollify, numb, obtund, pad, palliate, pare, play down, plummet, plunge, poultice, pour balm into, pour oil on, purify, reduce, reduce the temperature, refine, relieve, remove, restrain, retrench, roll back, rub away, run low, sag, salve, scale down, shorten, shrink, simplify, sink, slacken, slake, slow down, slur over, smother, sober, sober down, soft-pedal, soften, soothe, step down, stifle, stupe, subduct, subdue, subside, subtract, suppress, tail off, take away, take from, tame, temper, thin, thin out, tone down, truncate, tune down, underplay, varnish, wane, waste, waste away, weaken, wear, wear away, weed, whitewash, withdraw

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lessen

Decrease

VB decrease, diminish, lessen, abridge, shrink, drop off, fall off, tail off, fall away, waste, wear, wane, ebb, decline, descend, subside, melt away, die away, retire into the shade, hide its diminished head, fall to a low ebb, run low, languish, decay, crumble, bate, abate, dequantitate, discount, depreciate, extenuate, lower, weaken, attenuate, fritter away, mitigate, dwarf, throw into the shade, reduce, shorten, subtract.

Moderation

VB be moderate, keep within bounds, keep within compass, sober down, settle down, keep the peace, remit, relent, take in sail, moderate, soften, mitigate, temper, accoy, attemper, contemper, mollify, lenify, dulcify, dull, take off the edge, blunt, obtund, sheathe, subdue, chasten, sober down, tone down, smooth down, weaken, lessen, check palliate, tranquilize, pacify, assuage, appease, swag, lull, soothe, compose, still, calm, calm down, cool, quiet, hush, quell, sober, pacify, tame, damp, lay, allay, rebate, slacken, smooth, alleviate, rock to sleep, deaden, smooth, throw cold water on, throw a wet blanket over, turn off, slake, curb, tame, smooth over, pour oil on the waves, pour oil on the troubled waters, pour balm into, mattre de l'eau dans son vin, go out like a lamb, roar you as gently as any sucking dove.

Contraction

VB become small, become smaller, lessen, decrease, grow less, dwindle, shrink, contract, narrow, shrivel, collapse, wither, lose flesh, wizen, fall away, waste, wane, ebb, decay, be smaller than, fall short of, not come up to, render smaller, lessen, diminish, contract, draw in, narrow, coarctate, boil down, constrict, constringe, condense, compress, squeeze, corrugate, crimp, crunch, crush, crumple up, warp, purse up, pack, squeeze, stow, pinch, tighten, strangle, cramp, dwarf, bedwarf, shorten, circumscribe, restrain, (subtraction) 38 abrade, pare, reduce, attenuate, rub down, scrape, file, file down, grind, grind down, chip, shave, shear, wear down, become small, become smaller, lessen, decrease, grow less, dwindle, shrink, contract, narrow, shrivel, collapse, wither, lose flesh, wizen, fall away, waste, wane, ebb, decay, be smaller than, fall short of, not come up to, render smaller, lessen, diminish, contract, draw in, narrow, coarctate, boil down, constrict, constringe, condense, compress, squeeze, corrugate, crimp, crunch, crush, crumple up, warp, purse up, pack, squeeze, stow, pinch, tighten, strangle, cramp, dwarf, bedwarf, shorten, circumscribe, restrain, (subtraction) 38 abrade, pare, reduce, attenuate, rub down, scrape, file, file down, grind, grind down, chip, shave, shear, wear down.

For further exploring for "lessen" in Webster Dictionary Online